Prevalence and characterization of the seven major serotypes of Shiga toxin-producing Escherichia coli (STEC) in veal calves slaughtered in France.

Shiga toxin (Stx)-producing Escherichia coli (STEC) belonging to the "top 7″ serotypes (i.e. O157:H7, O26:H11, O45:H2, O103:H2, O111:H8, O121:H19 and O145:H28) are considered as the main pathogenic enterohemorrhagic E.

High Fecal Prevalence of -Positive in Veal Calves at Slaughter in France.

The aim of this study was to determine the percentage of healthy veal calves carrying -positive strains at the time of slaughter in France. Fecal samples were selectively screened for -positive isolates using media supplemented with colistin. Screening for genes was also carried out in isolates resistant to critically important antimicrobials used in human medicine recovered from the same fecal samples.

Persistent Circulation of Enterohemorrhagic (EHEC) O157:H7 in Cattle Farms: Characterization of Enterohemorrhagic O157:H7 Strains and Fecal Microbial Communities of Bovine Shedders and Non-shedders.

Cattle are carriers, without clinical manifestations, of enterohemorrhagic (EHEC) O157:H7 responsible for life-threatening infections in humans. A better identification of factors playing a role in maintaining persistence of such strains in cattle is required to develop more effective control measures. Hence, we conducted a study to identify farms with a persistent circulation of EHEC O157:H7.

Wild Boars as Reservoir of Highly Virulent Clone of Hybrid Shiga Toxigenic and Enterotoxigenic Escherichia coli Responsible for Edema Disease, France.

Edema disease is an often fatal enterotoxemia caused by specific strains of Shiga toxin-producing Escherichia coli (STEC) that affect primarily healthy, rapidly growing nursery pigs. Recently, outbreaks of edema disease have also emerged in France in wild boars. Analysis of STEC strains isolated from wild boars during 2013-2019 showed that they belonged to the serotype O139:H1 and were positive for both Stx2e and F18 fimbriae.